Rato R160, Service Manual

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12
rod
Big end I.D
Big end oil clearance
Big end side clearance
33.225-33.239mm
0.013-0.03mm
0.25-0.65mm
33.27mm
0.12mm
1.0mm
Crankshaft Crankshaft pin O.D 33.175-33.185mm 33.12mm
Valves
Valve clearance
Stem O.D.
Guide I.D.
Stem clearance
Seat width
Spring free length
IN
EX
IN
EX
IN/EX
IN
EX
0.10-0.15mm
0.15-0.20mm
6.575-6.59mm
6.535-6.55mm
6.6-6.615mm
0.01-0.04mm
0.05-0.08mm
0.8-1.0mm
38.5-39.5mm
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--
6.44mm
6.4mm
6.66mm
0.10mm
0.12mm
2.0mm
37.5mm
camshaft
Cam height
Journal O.D
IN
EX
6.045mm
5.766mm
16.166-16.184mm
5.95mm
5.65mm
16.12mm
Crankcase
cover
Camshaft holder I.D 16.2-16.218mm 16.248mm
Carburetor
Main jet
Float height
Pilot screw opening
Φ 2
1-3mm
2-7/8 circle
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--
--
Spark plug Gap 0.7-0.8mm --
Spark plug
cap
Resistance 9.5-10.5k Ω --
Ignition coil
Resistance
Air gap
Primary coil
Secondary coil
0.6-0.9 Ω
5.6-6.9k Ω
0.3-0.5mm
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--
--
1-3-7 R300
Parts Item Standard Service limit
Engine
Maximum speed (No load)
Cylinder compression
3750-3850rpm
1.1Mpa （ 1400rpm ）
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--
Cylinder
head
Sleeve I.D. 80.0-80.015mm 80 .17mm
Cylinder
head
Warpage -- 0.10mm